Rolling ruler



FIG. 1 is a top, front, and left side perspective view of a rolling ruler showing my new design;

FIG. 2 is a top plan view;

FIG. 3 is a front elevational view;

FIG. 4 is a bottom plan view;

FIG. 5 is a rear elevational view; and

FIG. 6 is a right side elevational view, the left side being a mirror image thereof. 

The ornamental design for a rolling ruler, as shown. 